gothic castle, dark corridors, flickering torches, mysterious atmosphere, ancient machinery, eerie underground chambers, protagonist Daniel, torn clothes, desperate expression, running, hiding, intense chase, monstrous creatures, shadowy figures, psychological horror, multiple outcomes, climactic confrontation, Alexander of Brennenburg, redemption, revenge, sacrifice, collapsing dimension, otherworldly portal, dramatic lighting, high contrast, suspenseful music, immersive sound effects, first-person perspective, heart-pounding finale, detailed textures, realistic stone walls, historical artifacts, Lovecraftian elements, interactive environment, dynamic shadows, foreboding silence, 3/4 view, atmospheric fog effects, intricate puzzle solving.